body{
    background-color: rgba(0,0,0,0.1);
}
.box {
    margin: 10% auto 0;
    width: 600px;
    height: 300px;
    font-family: serif;
}
.login_box{
    border-radius: 20px;
    width: 600px;
    height: 240px;
    background-color: rgba(0, 0, 0, 0.1);
}
.title_box{
    color: #b6b4b9;
    text-align: center;
}